# algebra

posted by
**Marissa**
.

1)Write an equation for an ellipse if the endpoints of the major axis are at(1,6)and (1,-6)and the endpoints of the minor axis are at (5,0)and (-3,0)

answer= (x-1)^2/36+y^2/16=1

2)Which is the equation of an ellipse with center (-4,2)and a horizontal major axis?

answer= (x-4)^2/16+(y-2)^2/4=1

3)Find the center and radius of the circle with equation x^2+(y-4)^2=9

answer= (0,4);3

4)Write the equation x^2-2x+y^2+4y=11 in standard form.

answer= (x-1)^2+(y+2)^2=16

5)Write the equation 4x^2+24x-y+34=0 in standard form

answer= y= 4(x-3)^2+2

#3 - correct